APA (7th ed.) Citation

Gagné, E. D., Yekovich, C. W., & Yekovich, F. R. (1993). The cognitive psychology of school learning (2a. ed.). Harpers Collins.

Chicago Style (17th ed.) Citation

Gagné, Ellen D., Carol Walker Yekovich, and Frank R. Yekovich. The Cognitive Psychology of School Learning. 2a. ed. Nueva York: Harpers Collins, 1993.

MLA (9th ed.) Citation

Gagné, Ellen D., et al. The Cognitive Psychology of School Learning. 2a. ed. Harpers Collins, 1993.